426751522661 has 16 divisors (see below), whose sum is σ = 435511308528. Its totient is φ = 418051968000.

The previous prime is 426751522651. The next prime is 426751522709. The reversal of 426751522661 is 166225157624.

It can be written as a sum of positive squares in 8 ways, for example, as 28558972036 + 398192550625 = 168994^2 + 631025^2 .

It is a cyclic number.

It is not a de Polignac number, because 426751522661 - 2²⁶ = 426684413797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426751522651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15959675 + ... + 15986391.

It is an arithmetic number, because the mean of its divisors is an integer number (27219456783).

Almost surely, 2^426751522661 is an apocalyptic number.

It is an amenable number.

426751522661 is a deficient number, since it is larger than the sum of its proper divisors (8759785867).

426751522661 is a wasteful number, since it uses less digits than its factorization.

426751522661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27832.

The product of its digits is 1209600, while the sum is 47.

The spelling of 426751522661 in words is "four hundred twenty-six billion, seven hundred fifty-one million, five hundred twenty-two thousand, six hundred sixty-one".